Select Page: 1 2 3 4 5 6 7 8 9 10 11 Next
Control.com topic...
PLCs
Originally posted by Nizam on 1 October, 2014 - 9:01 pm
Allen Bradley Micrologix 1400 PLC Communication with Yokogawa DCS
New Replies:
AB does a pretty good job of making the answers to those questions available in their documentation...
Topic: PLCs and related questions.
from the Forum department...
Siemens S5 to ControlLogix Conversion
Posted by Wade on 1 October, 2014 - 5:43 pm
Translating a Siemens S5 in Statement to Allen-Bradly ControlLogx LAD.
Topic: PLCs and related questions.
from the twido suite department...
PLC timed sequence
Posted by JustinDee on 1 October, 2014 - 7:49 am
is it possible to stop all TON TOFF timers?
Topic: Communications systems and equipment.
from the Master Thesis world department...
Master Thesis Guidance With Protocols
Originally posted by Sandra Calvo on 26 September, 2014 - 3:56 am
Trying to decide which communication protocol is better for the API I am designing for my Master Thesis.
New Replies:
The security/cost of MODBUS is exceptionally inviting for most applications. It is a...
You could also look through the California Smart Grid initiatives, as they are trying to define...
Thank you all for your responses. I am strongly considering Modbus, because DNP3 seems to be...
Hi. You must pay attention in the security (cryptography) issues. A large scale data network...
I can only speak for the last 35 years (20 with the Fisher ROC series) and it has been Modbus all...
Wow, that's a tall order. Which is better? :-) Really it depends on your market. Modbus is great...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Open Source PLC Programming Software
Originally posted by Marx on 29 September, 2014 - 12:46 am
I wanted to know what are the best open source PLC Programming software to use
New Replies:
> I wanted to know what are the best open source PLC Programming software to use? > I am a...
Originally posted by Simon on 25 September, 2014 - 4:21 am
Why do people who believe that the OEM is the best alternative for off-warranty service & retrofit contracts why?
New Replies:
Simon, Great philosophical question, and I'm going to try to answer each of your points. >...
Posted by Brian on 28 September, 2014 - 9:18 pm
Setting up connectivity for VB.NET 2012 OPC. How do I list the TAGs in my controller?
Topic: Communications systems and equipment.
from the Engineering design department...
RS485 Connnection to DV-6 VE4006P2
Originally posted by Bhaskar Mittal on 26 September, 2014 - 12:53 pm
Connecting DCS to VFDs on 485 Modbus RTU
New Replies:
Modbus is not plug-and-play even if Emerson's laughable marketing spiel, "Plug your Serial...
Topic: Continuous process industries, DCS questions.
from the General Engineering department...
DCS vs PLC
Originally posted by Krishna K. Naidu on 29 June, 2006 - 12:11 am
Advantages of DCS over PLC for Gas turbine control
New Replies:
I am in agreement and as a proponent of Allen Bradley systems, the difference is in the planning....
Topic: PLCs and related questions.
from the Forum department...
Contactless Card Reader and PLC
Posted by Amer on 26 September, 2014 - 3:30 am
How to connect contactless card reader to PLC?
Topic: Engineering and workplace issues.
from the Automation List department...
Why 4-20 ma is used in Analog Signals?
Originally posted by sreeraj on 3 June, 2007 - 12:25 pm
Why 4-20 ma is used in Analog Signals?
New Replies:
The point will be argued until 4 - 20 mA is dead and buried. Did anyone mention it was just a...
Topic: Continuous process industries, DCS questions.
from the Instrumentation department...
Thermocouple Temperature Drops Suddenly
Originally posted by Litto on 22 September, 2014 - 2:06 am
Unexplained temperature drop while process is running
New Replies:
if grounded t/c's are being used, ground loops between the thermowell locations and its ground path...
If your getting any kind of moisture or water that can cause wrong readings also....
I agree with the suggestion of a short between the + and - wires somewhere. It could even be a...
If you get a high mV reading across the thermocouple wires, then - moving the wires to make the...
but if its the problem with cable or element, would i get milli volt corresponding to 950 or 900 on...
A drop to 100 is indicative of a short creating a false junction. A drop to zero is indicative...
If you are dealing with 950C as opposed to 950F, it could be a problem with the thermowell or the...
Somewhere between the hot junction and the analog input there's a short circuit in the extension...
Topic: Open interfaces, software and hardware
from the Forum department...
Free HMI/Process control software
Originally posted by Jim on 23 January, 2012 - 8:13 am
Introduction of free, platform independent and open source HMI/automation software
New Replies:
Even if late, I'd like to chime in and mention there is also Eclipse SCADA...
Topic: Engineering and workplace issues.
from the Forum department...
DCS analog input problem
Originally posted by mahmoud fawzy on 4 September, 2014 - 7:10 pm
DCS Analog input signals didn't work with ADAM card
New Replies:
I just want to comment that this is a great thread to follow. I enjoyed reading the dialog very...
Mr. Fawzy, That's a very interesting observation. A common for all channels is what allows...
Topic: PLCs and related questions.
from the Forum department...
Encoder input module in PLC
Originally posted by sensorless on 23 September, 2014 - 4:58 am
For a 1700 ppr encoder input, is it necessary to use a High Speed Digital Input module in PLC?
New Replies:
> You have to look at a couple of things. > One is whether you need a quadrature signal or...
You have to look at a couple of things. One is whether you need a quadrature signal or whether a...
Topic: PLCs and related questions.
from the Just cant figure it out! department...
High Speed counter S7-200
Originally posted by Robert Jones on 9 September, 2002 - 3:11 pm
I need help in figuring out how to use a HSC as a tachometer with the siemens S7-200. It seems simple enough.
New Replies:
hi i am looking for an example about HSC in S7-200 so badly, i need a tangible example. i...
Topic: PLCs and related questions.
from the Forum department...
Synchronizing Two ABB DCS Controllers
Posted by haroon0023 on 23 September, 2014 - 3:47 am
One type of status reading of ABB DCS says they are Synchronized, but other says they are 35% in Synchronized.
Originally posted by Psahu on 18 September, 2014 - 10:49 am
Are controller tag details for control logix is available on ethernet/IP? Using 1756-EN2T module in controller chassis for communication.
New Replies:
Psahu, It is depend on what third party devices you would like to connect. Can you be more...
The Ethernet/IP protocal is well defined in the spec for it. Best bet is to either buy the spec and...
Topic: PLCs and related questions.
from the Forum department...
Yokogawa DCS Analog Module AAI143
Originally posted by Ariel on 15 September, 2014 - 2:45 pm
Difference between analog mA value and their correspondent raw value.
New Replies:
I checked the Tunning parameters and there is an error. Maybe is a good idea to do an offline...
Tunning-Raw Value should be
 4 mA    ----> 0%
 6.16 mA ----> 13.5%
 8 mA   ...
Topic: PLCs and related questions.
from the Instrument and Control department...
Siemens S5 CPU 922 Run and Stop LED Do Not Turn ON
Originally posted by Syed Waqar Azeem on 11 September, 2014 - 1:05 am
Run and Stop LED on front of Siemens S5 922 CPU doesn't turn ON on powering of rack. Only BASP LED on front of CPU is turned ON.
New Replies:
We have started getting a fair number of service calls for S5 units. They are closing in on thirty...
The only thing I can think of is that the Rack is faulted. The backup battery may be missing or...
Topic: Communications systems and equipment.
from the ModbusTCP department...
PROSOFT MVI56-MNET Slave Response Time
Posted by Cris on 17 September, 2014 - 2:27 pm
PROSOFT MVI56-MNET communication response time and performance
Topic: PLCs and related questions.
from the PLC comm error department...
TSX Premium PLC Problem
Originally posted by visitor on 16 September, 2014 - 7:29 am
Telemecanique TSX Premium PLC unstable operation
New Replies:
Thank you very much for your answer. I got contact with local Schneider representatives. They...
This could be programming......hardware....etc. etc. Without being online with the plc when this...
Topic: Communications systems and equipment.
from the Forum department...
RSLinx issue in VMWare WIn 7 32 bit VM
Originally posted by Paul on 11 September, 2014 - 11:28 am
I can do a serial upload and download but I cannot go online with RSLogix 500 inside a VM running WIn 7 32 bit
New Replies:
I just got the 2 port version and it works like a champ. Upload, download and online. Thanks! ...
Posted by Psahu on 17 September, 2014 - 10:20 am
Communication not getting established between Yokogawa (ALE-111) and Control logix using Ethernet/IP.
Select Page: 1 2 3 4 5 6 7 8 9 10 11 Next
 
 

Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2014 Nerds in Control, LLC. All rights reserved.

Users of this site are benefiting from open source technologies, including PHP, MySQL and Apache. Be happy.


Fortune
In Denver it is unlawful to lend your vacuum cleaner to your next-door
neighbor.
Advertise here
Advertisement
our advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive